Home / 30,695.62-42,365.77-19,215.86

Finding the Fourth Proportional to 30,695.62, 42,365.77 and 19,215.86

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Solution

The fourth proportional to 30,695.62, 42,365.77 and 19,215.86 is: 26,521.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,695.62 : 42,365.77 = 19,215.86 : x
  2. Step 2: Convert to fraction form
    30,695.62/42,365.77 = 19,215.86/x
  3. Step 3: Cross multiply
    30,695.62x = 42,365.77 × 19,215.86
  4. Step 4: Simplify right side
    30,695.62x = 814,094,762.99
  5. Step 5: Solve for x
    x = 814,094,762.99/30,695.62
  6. Step 6: Final answer
    x = 26,521.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.